Characteristics of Active Combustion Control for Liquid-Fuel Systems with Proportional Primary Fuel Modulation

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dc.contributor.authorHines, Anne Michelleen
dc.contributor.committeecochairBaumann, William T.en
dc.contributor.committeecochairSaunders, William R.en
dc.contributor.committeememberVandsburger, Urien
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:36:16Zen
dc.date.adate2005-05-24en
dc.date.available2014-03-14T20:36:16Zen
dc.date.issued2005-05-03en
dc.date.rdate2005-05-24en
dc.date.sdate2005-05-11en
dc.description.abstractThe first part of this work focuses on control experiments performed on an unstable kerosene-fueled turbulent combustor. Using a phase shift controller and primary fuel modulation stability is successfully gained for a wide band of global equivalence ratios allowing the limitations of the control scheme to be characterized. It is shown that control signal saturation can significantly impact the ability of the control scheme to stabilize the system. Three different regions of controllability are defined based on the degree of saturation. A hysteresis behavior is also found to exist for the controller settings depending on whether stability is being maintained or realized for an unstable system. The second part of this work focuses on the impact that primary fuel modulation has on the fuel spray. Measurements for a simplex nozzle and an air-assist nozzle are taken under both static and dynamic operating conditions with a Phase Doppler Anemometry system. The dynamic modulation is found to significantly impact the spray properties of both nozzles.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05112005-113643en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05112005-113643/en
dc.identifier.urihttp://hdl.handle.net/10919/32569en
dc.publisherVirginia Techen
dc.relation.haspartAnne_Hines_Thesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectair-assist nozzleen
dc.subjectphase doppler anemometryen
dc.subjectsimplex nozzleen
dc.subjectatomizationen
dc.subjectproportional fuel injectionen
dc.subjectactive combustion controlen
dc.titleCharacteristics of Active Combustion Control for Liquid-Fuel Systems with Proportional Primary Fuel Modulationen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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